backlog/207_212_fiware_service_path

This issue implements/fixes several backlog features and issues:

* Use the `fiware-servicePath` header (https://github.com/telefonicaid/fiware-connectors/issues/212)
* Common character set when naming persistence elements (https://github.com/telefonicaid/fiware-connectors/issues/207)
* The organization is not created in column mode anymore (https://github.com/telefonicaid/fiware-connectors/issues/181).

DO NOT MERGE YET
It starts getting complex... Maybe after this table we should include the explanation of the different elementes, eg.

```
* integer id: this field means...
* comma-separated fields: [in this part include the dictionary]
* regex to be applied to the fields concatenation: ...
* destination: ...
* dataset: ...
```